Westside Wastewater

Customers west of Paine Field, per Resolution No. 408-16 (approved: December 21, 2016).

Customer Classification2 Month Base Rate
Effective Jan 1, 2018
Volume Charge
Effective Jan 1, 2018
2 Month Base Rate
Effective Jan 1, 2019
Volume Charge
Effective Jan 1, 2018
Single Family Residence$132.70N/A$130.42
N/A
Multi-family residence
$92.62
N/A
$95.30
N/A


Commercial-Industrial Class

Meter Size
2 Month Base Rate
Effective Jan 1, 2018
Volume Charge (1000 gallons)
Effective Jan 1, 2018

2 Month Base Rate
Effective Jan 1, 2019
Volume Charge (1000 gallons)
Effective Jan 1, 2019
5/8 x 3/4"
$76.92$7.32$78.84
$7.78
1"$192.28$7.32$197.10
$7.78
1-1/2"$384.58$7.32$394.20
$7.78
2"$615.30$7.32$630.70
$7.78
3"$1,231.04$7.32$1,261.84
$7.78
4"$1,922.82$7.32$1,970.92
$7.78
Commercial (Contract)
$27,554.68
$4.47
$31,204.08
$5.04


Strength Class Volume Change

Customer ClassificationVolume Charge 
Effective January 1, 2018
Volume Charge 
Effective January 1, 2019
Class II$3.58$3.85
Class III$8.59$9.23
Class IV$0.86$.92


Surcharge:  Additionally, all customers in the Commercial-Industrial class above shall also be charged an additional surcharge based on strength of waste. Strength classes shall be measured as follows:

Strength Classes

ClassBODUnits (Actual Water Use)
Strength Class I0 to 300 milligrams per liter BOD
200 milligrams per liter BOD
Strength Class II301 to 900 milligrams per liter BOD
400 milligrams per liter BOD
Strength Class III901 to 1,500 milligrams per liter BOD1,000 milligrams per liter BOD
Strength Class IVOver 1,500 milligrams per liter BODTo be determined


Wastewater surcharge rates for Strength Class IV are based on BOD concentrations as opposed to predefined concentrations used in Classes I, II and III. Staff, based on a calculation for BOD over 1,500 milligrams per liter BOD, will determine actual volume rate.  

Customer classifications are established as follows:

  1. Single family residential shall mean a residential unit served by a separate water meter. 
  2. Multi-family residential shall mean duplex, apartments, condominiums, townhouses, and mobile home parks served by a single water meter. 
  3. Commercial-Industrial Class I shall mean a non-residential non-food processing/preparation customers including but not limited to retail stores, offices, service stations, schools, churches, governmental facilities, parks, manufacturing businesses, hotels and motels, all of which have a daily average BOD strength of 300 milligrams per liter or less.
  4. Commercial-Industrial Class II and III shall mean a non-residential customer including restaurants, taverns, food processing/preparation businesses, breweries, ferry terminals and ferry waste, or other businesses which have a daily BOD strength between 301 milligrams per liter and 1,500 milligrams per liter.                        
  5. Commercial-Industrial Class IV shall mean a non-residential customer with a daily average BOD strength in excess of 1,500 milligrams per liter.
  6. Commercial-Industrial Contract Customers shall mean a non-residential customer served by the District by contract.